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Welcome to Flask’s documentation. This documentation is divided into
different parts. I recommend that you get started with
Installation and then head over to the Quickstart.
Besides the quickstart, there is also a more detailed Tutorial that
shows how to create a complete (albeit small) application with Flask. If
you’d rather dive into the internals of Flask, check out
the API documentation. Common patterns are described in the
Patterns for Flask section.

Flask depends on two external libraries: the Jinja2 template
engine and the Werkzeug WSGI toolkit. These libraries are not documented
here. If you want to dive into their documentation, check out the
following links: